Best Time to Fly BHM to ORD: On-Time Stats by Hour & Airline
Birmingham-Shuttlesworth International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
1,117 flights were scheduled from Birmingham (BHM) to Chicago (ORD) in the last 12 months, and 77.9% of those that flew arrived on time, in line with the US average of 77.6%.
Republic Airways was the most punctual of the 3 airlines on the route at 85.0%, while SkyWest Airlines trailed at 55.2%.
September has been the best month (88% on time) and Saturday the weakest day of the week (75%).
1.7% of flights were cancelled, versus 1.8% nationally.
BHM to ORD on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airways | 85.0% | 75 min | 0.9% | 228 |
| Envoy Air | 78.9% | 79 min | 1.8% | 779 |
| SkyWest Airlines | 55.2% | 112 min | 2.8% | 108 |
| PSA Airlines | Limited data | 2 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BHM to ORD
On-time arrival % by scheduled departure hour (local time), 1,685 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 4 | |
| 6am–7am | 86.0% | 0.6% | 494 |
| 7am–8am | 84.3% | 0.9% | 116 |
| 8am–9am | Limited data | 2 | |
| 9am–10am | Limited data | 4 | |
| 10am–11am | 82.8% | 0.7% | 451 |
| 11am–12pm | 82.7% | 0.8% | 129 |
| 12pm–1pm | Limited data | 25 | |
| 1pm–2pm | 90.7% | 0.0% | 54 |
| 2pm–3pm | 69.4% | 2.0% | 50 |
| 3pm–4pm | 77.4% | 6.1% | 33 |
| 4pm–5pm | 56.4% | 1.1% | 95 |
| 5pm–6pm | 61.1% | 3.7% | 164 |
| 6pm–7pm | 62.1% | 3.3% | 60 |
| 8pm–9pm | Limited data | 4 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BHM to ORD
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 56.2% | -23.7 pts | 5.9% | 34 |
| Christmas & New Year (Dec 20 - Jan 3) | 82.5% | +2.6 pts | 0.0% | 40 |
| Summer peak (Jun 15 - Aug 15) | 78.9% | -1.0 pts | 1.5% | 269 |
| All other days | 79.9% | — | 1.0% | 1,342 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).